Automatic electric railway-signal.



J. FRIEDLANDBR & M. PEGAR.

AUTOMATIC ELEGTRIG RAILWAY SIGN AL.

Arruouilon FILED JUNE 1, 1909. 4

Patented Mar. 8, 1910.

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J JACOBFRIEDLANDER AND MIRKO PECAR, F GARY, INDIANA.

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To all whom it mdy concern:

- Be it known that we, JACOB FRIEDLANDER.

and Munro Pnoiuncitiz'ens of the United States, residing at Gary, inthe county of Lake and State of Indiana,have invented newand useful Improvements in Automatic Electric Railway iignals,of which the fol- .lowingis a specification. I

Our invention has relation to automatic, electric, railway signals; and its novelty and utility will be fully understood from the following-description and claim when the same are read in connection with the drawings,

accompanying and forming part of this specification, in which:

Figure 1 is a view showing in side elevation a train and railway-equipped with an apparatus constructed according. to our invcntion. Fig. 2 is a vertical crosssectionof the same. Fig. 3 is a broken plan View showing in diagrammatic fashion two trains equipped with our novel signal apparatus, and assumed to be moving toward each other on the same track. Flg. 4 is a diagran'nnatic view illustrating a railway crossing and asystem of wiring, whereby ail'engineer approaching the'crossing on one track will be put on notice in the event of a train a proaching the" crossing on the other tracl r. Fig. 5 is an enlarged'detail view showing (liagramniat-ieallythe batteries and signals of tholoconiotive cab shown in Figs. 1 and 9., and at the left of Fig. 3. Fig. 6 is-an'enlarged view of the means for ringing the hell on the locomotive.

Similar letters and numerals of reference designate corresponding parts in all of the views of the drawings.

Generallyspeaking;the railway, the telegraph poles A at the side of the railway, and the cars B and locomotives C of the trains numbered 1 and 2, respectively, may be and preferably are of the ordinary, well known construction. I

-In carrying our invention into effect we provide at intervals in the length of the railway and at a suitable distance apart less than the length of ordinary trains arms usual manner ho'roi/ta'rm nnncrmc RAILWAY-sienna.

Specification of letters Patent. i 'Partenttadltllllail. 8 191i), Application filed. June 1, 1909. "Serial No. 499,397.)

tioned to contact with the andF incidentalto the passage or the trainsiielow pair of brushes E and F. In ana'pprd priate place on each train, and prefcrablyin the locomotive cab thereof, we arrange an. electrical equipment comprising, by'preien. ence, a source of electric-energy I, a telephone set J and an electric bell L .oijother audible or visible signal, Fig. 5 each of which devices is per 86 of the ordinary, well known construction and need not, therefore, be pan ticularly described. We also prefer toole .trically connect the bat-teryl, the telephone J and the electric bell L in eachcab in they conventional manner; the connection to the bell L being through the telephonehook so that when thereceiver is lifted from hook and the hook moves upwardly in the the 'bell'L' will be shunted out of the'circuit. By reference to Figs. 2 and 5, it will be observed vthat the plus pole of the battery I in train No. lis electrically connected with the right-hand rail H of said train, and the plus pole of the battery I in trainNo. 2 is electrically connected. with the right-hand rail 'H of that train, this arrangementbeing resorted to in orderto prevent sounding of the electric bellsL when the trains are hcaded and movin in the samedirection.

By virtue 0% the equipment described, and

assumin that the trains No. 1 and No. 2

are hea ed toward each other on the same track, it will be observed that durlng the passage of the trains below arms I), the

electric current will passftrom the plus pole of the battery it in train No. 1*, for instance,

to the rail H of said train, and then through said rail H, the shoe F in contact therewith, the wire f, the other shoe F, the rail (it at train No. 2, the bell L of said train, the battery I and rail H thereof, one shoe E, the

wire 6, the other shoe E, the rail G of train No. 1, the bell L of said train and baclcto the minus pole of the batter 1 thereof, with the result that the electric )EllS in the cabs of both trains will be set ringing, and the crossing track but not otherwise.

engineer of each will be apprised'ot the approach of the other, and by proceed ngcautiously will be enabled to avoid a head-on collision. It will also be manifest that when the engineers take down the receivers of the telephones, the electric bells L will be cut out, and the current then being through the telephones the engineers can conveniently communicate with each other regarding the subsequent conduct of their trains. It will further be observed by reference to Fig. 3 that when the wires 6 and f are connected with a telephone set J and an electric bell L in a suitably located station M, the engineers are enabled to communicate with and receive orders from a despatcher or other person in authority at the station. Coinmunication between the trains is interrupted when the rails G and H of one passes out of contact with a pair of the brushes E F,

but it will be manifest that when the rails G H of one train only are in contact with brushes E F, that train is in telephonic or telegraphic communication with the despatchers station M.

In the crossing arrangement shown in Fig. 4, brushes E F are arranged at all four sides of the crossing and at a suitable distance therefrom, and the brushes E F of each track portion are connected through wires 6 f with track portions extending at right angles to the first named track portion. It will also be understood that the brushes E F are isolated from the wires 6 and f, and consequently when a-train is traveling toward the crossing and is adjacent the crossing with the train rails G and H in contact with the brushes E F, the signal in the locomotive cab will be actuated in the event of a train approaching on the It will thus be seen that when trains are moving on the crossing tracks and toward the crossing with their rails in contact with the brushes E andF the engineers of the two trains will be put on notice each in regard.

to the adjacency of the other, and consequently by proceeding cautiously a collision at the crossing can be readily avoided.-

While we have described telephone'sets J as the preferred means for enabling the engineers and despatcher to communicate with or signal each other, we do not desire to be understood as confining ourselves to said means, inasmuch as other signaling or courmnnicating means may be employed without involving departure from the spirit of our invention.

In order to apprise the engineer of either train of the fact that his train is in elec trical connection will two of the brushes F and F, or with two of the brushes E F con'lplementary to the crossing, we prefer to provide each overhanging arm D with a tappet T which, by engaging an upstanding crank U on the usual bell \V of the locomotive, adapted to ring said bell as the locomotive passes. Said tappoi 'l and the cooperating appurtenances on the locomotive bell are, however. not essential to thesuccessful practice of our invention and may, therefore, be omitted ithout affecting the invention. We would also have it understood that when deemed expedient, the tappets U may be used only on the arms I) bearing the brushes E F complcmentary to the crossing arrangement.

It will be readily gathered from the forcgoing that our novel signal apparatus is simple and inexpensive in construction, is well adapted to withstand the usage and exposure to which railway signals are ordinarily subjected, and is capable of being readily applied to rallways and rolling stock at presentin use.

Having described our invention. what we claim and desire to secure by Letters-Patent. is:

in an electric railway signal, the combi nation of crossed railways, suitably supportcd pairs of brushes spaced apart one pair at each of the four sides of the crossing, wires connecting the brushesof the pairs of each 'ailway with the respective brushes ot' the pairs of the other railway. a railway train, longitudinal rails carried by and extending lhroughoul the length of the train and adapted to directly contact with the brushes incidental to the passage of the train, and a signal a l10llllRll Y ()})0ll signal circuit and a source ct electric cneigv, carried by the train, said circuit including said signal and said source of energy and having connections with said rails whereby a signal is produced on the trair when either of the pairs of brushes on the opposite railway are electrically connected and the rails of the train are in contact with the pair of brushes.

In testimony whereof we have hereunto set our handsin presence of two ,Sllbicl'lblllg' witnesses.

JACOB PRIEDLANDER. MIRKO PECAR. Witnesses:

JNo. J. HANLEY, F. L. Tanco'r'r. 

